The Genius of Mendeleev's Periodic Table

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

who discovered the first scientific and systematic periodic table

• Henry Mosley

• Dmitri Mendeleev

• John Dalton

• sir Isaac Newton

How did Mendeleev arrange the elements?

• alphabetical 

• density

• melting point

• atomic mass

Dimitri found that there was a pattern of properties that repeated every ____ elements.

• 2

• 4

• 5

• 7

Who is credited with creating the first periodic table?

• John Dalton

• J.J. Thomson

• Dmitri Mendeleev

• Ernest Rutherford

Tags

NGSS.HS-PS1-1

A vertical column on the periodic table is called a (a)   and a horizontal row is called a (b)  

• group

• period

• horizon

Label the element with the correct terms

a

b

c

d

Element Symbol

Element Name

Atomic Mass

Atomic number

What was Dmitri Mendeleev's greatest contribution to the history of the periodic table?

• He arranged all of the known elements by their atomic number

• He realised that there was a pattern of reactivity which repeated every 8 elements

• He predicted the existence (and properties) of new elements

• He identified the "law of triads" which became the groups

Why were there blank spaces left in Mendeleev's periodic table?                                              

• He didn't know what to put there.

•  Undiscovered elements not yet known.

• Multiple elements could have fit

• He forgot to add the elements in.

A ___________ is an arrangement of elements in columns

• columns

• rows

• periodic table

• electron shell